What Actually Helps With Brain Fog in Women Over 35?

Three lifestyle factors have the most consistent research support for cognitive function in women over 35: resistance training, omega-3 fatty acids, and sleep architecture. Each addresses a different mechanism of the brain fog picture, and the evidence behind each has grown substantially in the past five years. None is a quick fix, but each is directly actionable and compounds over time. Supplementation with NAD+ and creatine provides additional cellular energy support that the lifestyle layer does not cover on its own.

Resistance training and the brain

Resistance training is one of the most studied and consistent behavioral interventions for cognitive function in midlife women. A pilot study published in the National Institutes of Health database involving 35 peri- and early postmenopausal women in a 9-month resistance training program found significant improvement in cognitive flexibility in the intervention group compared to waitlist controls, with non-significant improvements also seen in processing speed, inhibitory control, and verbal episodic memory. Resistance training appears to support brain health through multiple pathways: increased cerebral blood flow, elevated BDNF (brain-derived neurotrophic factor, a protein that supports neuron growth and survival), and reduced inflammatory markers.

The mechanism is particularly relevant for women in perimenopause because resistance training also preserves the muscle mass that declining estrogen accelerates the loss of, and muscle is now understood to function as an endocrine organ that secretes myokines with neuroprotective properties. The cognitive and physical benefits of resistance training are not separate for perimenopausal women. They operate through overlapping biology.

Twice weekly is the minimum studied dose. Compound movements that load multiple muscle groups and provide progressive challenge produce the strongest outcomes.

Omega-3 fatty acids and brain structure

DHA (docosahexaenoic acid) is the dominant structural fatty acid in the brain, comprising approximately 40 percent of total fatty acids in the cerebral cortex. The brain cannot synthesize DHA efficiently from plant-based precursors. It must come from preformed dietary sources or supplementation.

A systematic review published in Nutrients via the National Institutes of Health analyzed nine studies covering 1,319 participants with a mean age of 45, finding that ingestion of omega-3 fatty acids increases learning, memory, cognitive well-being, and blood flow in the brain. Omega-3 supplementation was well tolerated across all studies included in the analysis.

Research in the National Institutes of Health database examining omega-3 fatty acid blood levels, cognitive function, and brain volume in older adults found associations between higher omega-3 levels and better cognitive performance, supporting the structural role of DHA in maintaining the brain architecture that cognition depends on.

For women who are not eating fatty fish two to three times per week, supplemental DHA is a straightforward gap to close. Algae-sourced DHA, which is where fish get their DHA in the first place, is the preferred form for women who want to avoid the oxidation risk and environmental load of fish oil.

"It's not a one-size-fits-all."

— Dr. Samantha Ess, ND, Naturopathic Doctor specializing in hormone health and fertility

Sleep architecture and cognitive consolidation

Sleep is when the brain consolidates memory, clears metabolic waste through the glymphatic system, and restores the prefrontal cortex's executive function capacity. The relationship between sleep and brain fog is bidirectional: poor sleep worsens cognitive function, and cognitive dysfunction increases anxiety about sleep, which worsens sleep quality further.

During perimenopause, sleep disruption is compounded by hot flashes, which affect approximately 75 percent of menopausal women per research cited in Frontiers in Sleep via the National Institutes of Health, and by the decline in progesterone, which has sedative properties. Addressing sleep architecture, not just sleep duration, is the relevant target.

The most evidence-supported approaches to sleep architecture in this population include consistent sleep and wake timing, reducing cortisol-disrupting patterns in the evening (late caffeine, high-intensity exercise after 6 p.m., blue light exposure), and ensuring the nutritional inputs for melatonin and GABA synthesis are present. Magnesium glycinate supports muscle relaxation and sleep quality.† Ashwagandha has also demonstrated sleep benefits in research using KSM-66 root extract, particularly for sleep quality rather than just duration.

Where supplementation fits alongside these habits

The lifestyle layer addresses the structural and behavioral foundations of cognitive health. Supplementation addresses the cellular energy dimension that lifestyle alone cannot reach.

NAD+ declines with age and is required for the same energy metabolism processes that both estrogen and glucose support in the brain. Pink Stork's our NAD+ supplement with 500 mg clinically studied NR provides 500 mg of Nicotinamide Riboside per capsule, the dose used in research documenting meaningful NAD+ elevation.† It is vegan, non-GMO, gluten-free, and third-party tested.

For the working memory and processing speed layer, our micronized creatine with just one ingredient supports the phosphocreatine-ATP system in brain tissue, with a 2024 meta-analysis finding sex-specific cognitive improvements in female participants.†

"Motherhood is not a solo journey. It takes a village, and it takes a body that is supported well enough to be present for every part of it."

— Amy Suzanne Upchurch, Founder and CEO of Pink Stork

For the full explanation of what is happening cognitively during perimenopause: Why Does Brain Fog Get Worse in Perimenopause?

For the NAD+ decline story: Does NAD+ Decline With Age and What Can You Do About It?

Pink Stork products are woman-founded and available at Target, Walmart, and CVS, with 50,000+ verified Amazon reviews across the brand.

Frequently asked questions

What is the single most evidence-backed habit for brain fog in women over 35?

Resistance training has among the strongest and most consistent evidence for cognitive function in midlife women, with documented improvements in cognitive flexibility, processing speed, and memory in peri- and postmenopausal populations. It also produces structural, muscular, and metabolic benefits that interact with brain health through multiple pathways simultaneously.

How much omega-3 do I need for cognitive support?

Research on cognitive function in adults typically uses doses of 1 to 3 grams of combined EPA and DHA daily. The most important factor is DHA specifically, which is the structural fatty acid in brain tissue. If you eat fatty fish two to three times per week, your DHA intake may be adequate. If not, a daily supplement providing 500 to 1,000 mg of DHA from algae or fish sources is a straightforward addition.

Why does sleep matter so much for brain fog?

Memory consolidation, metabolic waste clearance via the glymphatic system, and restoration of prefrontal cortex function all happen primarily during sleep. When sleep architecture is disrupted, even if total hours are adequate, the brain does not complete these restorative processes fully. The cognitive sluggishness the next day is a direct consequence.

How long does it take for resistance training to improve cognitive function?

The pilot study in perimenopausal women used a 9-month program and found significant improvements. Other research suggests cognitive benefits can emerge within eight to twelve weeks of consistent training, though longer programs produce stronger outcomes. Twice-weekly sessions with compound movements and progressive loading are the minimum studied dose.

Can I take NAD+ and creatine together?

Yes. NAD+ (as NR) and creatine monohydrate work through different and complementary mechanisms: NAD+ supports cellular energy metabolism and DNA repair, while creatine replenishes the phosphocreatine-ATP buffer in muscle and brain tissue. No interactions between them have been documented. Always consult your healthcare provider before starting any new supplement.

Does DHA from algae work as well as fish oil?

Yes. Fish get their DHA from algae, making algae-sourced DHA a direct source that bypasses the fish entirely. Algae DHA has better oxidative stability than fish oil and avoids the ocean contamination concerns associated with fish-sourced omega-3s. Bioavailability is comparable between the two forms.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition. Keep out of reach of children.